diff --git a/evocheck.sh b/evocheck.sh
index bd45a25..e171585 100755
--- a/evocheck.sh
+++ b/evocheck.sh
@@ -519,7 +519,14 @@ if [ -e /etc/debian_version ]; then
     # Check if no package has been upgraded since $limit.
     if [ "$IS_NOTUPGRADED" = 1 ]; then
         last_upgrade=$(date +%s -d $(zgrep -h upgrade /var/log/dpkg.log* |sort -n |tail -1 |cut -f1 -d ' '))
-        limit=$(date +%s -d "now - 90 days")
+        if grep -q '^mailto="listupgrade-todo@' /etc/evolinux/listupgrade.cnf \
+        || grep -q -E '^[[:digit:]]+[[:space:]]+[[:digit:]]+[[:space:]]+[^\*]' /etc/cron.d/listupgrade; then
+            # Manual upgrade process
+            limit=$(date +%s -d "now - 180 days")
+        else
+            # Regular process
+            limit=$(date +%s -d "now - 90 days")
+        fi
         if [ -f /var/log/evolinux/00_prepare_system.log ]; then
             install_date=$(stat -c %Z /var/log/evolinux/00_prepare_system.log)
         else